Table 1.

The conditions of the parallel perforated ventilation³³.

Conditions	Inlet	Outlet	Close	Start and stop time of ventilation	Air velocity	Temperate
1	L1	R1, R2, R3, R4	L2, L3, L4	December 22 ~ December 31	5 m/s	-30℃
2	R1	L1, L2, L3, L4	R2, R3, R4	January 1 ~ January 10	5 m/s	-30℃
3	L2	R1, R2, R3, R4	L1, L3, L4	January 11 ~ January 20	5 m/s	-30℃
4	R2	L1, L2, L3, L4	R1, R3, R4	January 21 ~ January 30	5 m/s	-30℃